The document outlines the complexities and requirements of the economic operator (EO) regime under the Medical Device Regulation (MDR) and In Vitro Diagnostic Regulation (IVDR), including the roles of various stakeholders such as manufacturers, importers, distributors, and authorized representatives. It discusses the implications of Brexit on these relationships, particularly for UK-based entities, and emphasizes the need for clarity in the definitions of 'placing on the market' and 'making available'. Key challenges in compliance, resource sharing among EOs, and the obligations tied to third parties, including parts and components, are also addressed.